My ONLY concern with the Dynatrac lift is how it will respond to the added weight of front/rear steel bumpers, a winch, a tire carrier with basket with a 37" spare, as well as a loaded interior for a western wheeling adventure. With a 2.5" lift I can have that .5" of sag factored in but at 2", that 2" lift will become a 1.5" lift and I fear it may not be enough. Would be curious to hear what dynatrac says about my concern.
Sorry, not Dynatrac but if you don't mind, I'll chime in with what I know. Short of riding on blocks, ALL coils will compress or sag with weight, it's just the nature of the beast. The more a coil can hold up weight, the shittier the ride will be especially when unloaded. Softer coils will provide a much nicer ride but at the cost of sagging under load. The Dynatrac coils are designed to be somewhere in between. Up front, with a heavy front bumper and winch, the front end sagged about 3/4". I installed 3/4" spacers and that brought be all the way back up. In the rear and running Loaded up with all the gear I normally carry including a heavy welder, fluids and tons of gear, my factory coils with a 2.5" budget boost left my rear end sitting at only 1/2" of lift. The same amount of gear on the Dynatrac coils still kept me at about 1.5" of lift. As soon as I can find a set of spacers for the rear, I intend to run them to help address it. For me, ride comfort MOST of the time is more important than looking level when I load up and go camping.